CAJ | 학술논문

采用电流型 PWM 整流技术的串级调速系统，省去了电压型斩波串级调速系统中的直流 Boost 斩波环节，简化了系统的拓扑结构，同时也能够实现系统功率因数的提高和变压器网侧谐波含量的减少。考虑到电流型PWM 逆变器在 dq 坐标系下是一个非线性耦合系统，不利于控制器的设计，采用精确线性化方法对原系统进行线性化并解耦，构造其伪线性系统模型，运用滑模变结构控制理论设计该伪线性系统的闭环控制器。同时，在Matlab/ Simulink 软件下，建立了基于此控制策略的模型并进行仿真。结果表明，该控制策略可实现电动机转速的快速、有效调节，同时可提高系统的功率因数，减少谐波含量。
채용전류형 PWM 정류기술적천급조속계통，성거료전압형참파천급조속계통중적직류 Boost 참파배절，간화료계통적탁복결구，동시야능구실현계통공솔인수적제고화변압기망측해파함량적감소。고필도전류형PWM 역변기재 dq 좌표계하시일개비선성우합계통，불리우공제기적설계，채용정학선성화방법대원계통진행선성화병해우，구조기위선성계통모형，운용활모변결구공제이론설계해위선성계통적폐배공제기。동시，재Matlab/ Simulink 연건하，건립료기우차공제책략적모형병진행방진。결과표명，해공제책략가실현전동궤전속적쾌속、유효조절，동시가제고계통적공솔인수，감소해파함량。
Using the current mode PWM rectifier technology in the cascade speed regulation system for motor can e-liminate the need for the dc Boost chopper of the voltage - type converter cascade speed regulation system,thus,sim-plify the topology of the system,and improve the power factor of the regulation system and reduce the content of the transformer network side harmonic. But thecurrent mode PWM inverter under the dq coordinate system is a nonlinear coupling system,which is not conducive to the controller design,so This paper proposed precise linearization to line-arize and decouple the original system,constructed its pseudo linear system model,and designed a closed loop con-troller of the pseudo linear system by usingthe sliding mode variable structure control theory. At the same time,in the Matlab / Simulink software,a simulation model was established based on this control strategy. The simulation results showed that the control strategy could achieve rapidand effective regulation of the motor speed,and meanwhile could improve th epower factor of the system and reduce the harmonic content.